EP0759545A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Bearing with sensor
Assignee: Timken US LLC
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Filing: 1996-08-22
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Granted: —
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Expires: 2016-08-22
Abstract
Abstract A bearing is mounted within a housing (10) having an acoustic-electric transducer (32) mounted on its outside. A stationary annular outer race (14), has at least one sensor (22), an electric-acoustic transducer (24), and an electronic system (26) interconnecting the sensor and the electric-acoustic transducer. The electric-acoustic transducer is mounted in an opening (36) extending radially through the stationary race, and has an elastic cap (56) pressed into the inside of the housing by a spring.
Inventors
- 👤 Richard L. Lemoine
- 👤 Richard W. Bronwer
- 👤 John K. Pearson
- 👤 Mark I. Jurass, Iii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 09:02
CPC Classifications
F; F16; F16C; F16C35/00; F16C35/04; F16C35/042; B; B21; B21B; B21B31/00; B21B31/07; B21B38/00; F16C19/00; F16C19/52; F16C19/527; G; G01; G01K; G01K1/00; G01K1/02; G01K1/024; B21B2203/00; B21B2203/38; B21B33/00; B21B38/006; F16C2322/00; F16C2322/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A bearing adapted to be mounted within a housing (10), comprising an annular rotatable race, an annular stationary race having a greater inside diameter than the outside diameter of the annular rotatable race, and a plurality of rollers (16) located in the annular space between said races; characterised by an acoustic-electric transducer (32) mounted on the outside of the housing (10); at least one electric-acoustic transducer (24) mounted on the annular stationary race, said electric-acoustic transducer having an elastic portion (56) adapted to contact the housing (10) to maximise an acoustic interface between the electric-acoustic transducer (24) and the housing (10), means (48) for pressing the elastic portion (56) against the housing, and means (22) mounted on the annular stationary race for sensing a parameter within the bearing and feeding electric signals to the electric-acoustic transducer (24) related to the value of the parameter sensed.
Claim 2
Dependent Claim
35 words
A bearing according to claim 1, wherein the annular stationary race (14) has an opening (36) extending radially from its inside to its outside surface and the electric-acoustic transducer (24) is mounted in said opening.
Claim 3
Dependent Claim
24 words
A bearing according to claim 1, or 2, wherein the means for pressing the elastic portion (56) against the housing is a spring (48).
Claim 4
Dependent Claim
14 words
A bearing according to claim 3, wherein the spring is a wave spring (48).
Claim 5
Dependent Claim
92 words
A bearing according to any one of the preceding claims, wherein said electric-acoustic transducer (24) has a cylindrical bushing (38) with an annular upwardly facing shoulder (40) and a sleeve (42) is mounted in the cylindrical bushing, said sleeve having an annular downwardly facing shoulder (44) spaced above said upwardly facing shoulder (40) thus providing an annular recess (46) and a cylindrical member (50) containing a piezoelectric crystal mounted in said sleeve, said elastic portion (56) being mounted in the top of said sleeve (42) in contact with said cylindrical member (50).
Claim 6
Dependent Claim
36 words
A bearing according to any one of the preceding claims and comprising an electronic system (34) connected to the acoustic-electric transducer (32) for indicating the value of the parameter sensed by said parameter sensing means (22).
References Cited (Backward Citations)
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